在Android Studio 建立新專案的時候，出現這個報錯：

Error:Execution failed for task ':app:preDebugAndroidTestBuild'.
> Conflict with dependency 'com.android.support:support-annotations' in project ':app'. Resolved versions for app (26.1.0) and test app (27.1.1) differ. See https://d.android.com/r/tools/test-apk-dependency-conflicts.html for details.

解決辦法：在 APP build.gradle 新增

可以參考這個 https://blog.csdn.net/yikunhan/article/details/8009603

 1 android {
 2     ...
 3 }
 4 
 5 configurations.all {
 6     resolutionStrategy.force 'com.android.support:support-annotations:27.1.1'
 7 }
 8 
 9 dependencies {
10     ...
11 }